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1. Network Functions of FortiGate:
a. Routing:
- Manages and directs traffic within the network through static or dynamic routing protocols.
b. DHCP (Dynamic Host Configuration Protocol):
- Dynamically assigns IP addresses to devices within the network, managing IP allocation.
c. NAT (Network Address Translation):
- Translates internal private IP addresses to public IP addresses for internet communication.
d. ACL (Access Control List):
- Allows or denies specific traffic based on access control policies for security and traffic management.
2. Firewall Policy:
a. ACL (Access Control List):
- Defines rules to allow or deny traffic based on specific criteria such as IP address, port, and protocol.
b. NAT (Network Address Translation):
- Applies address translation rules for outgoing and incoming traffic to hide internal IP addresses from external networks.
c. Matching Logs:
- FortiGate logs and shows matched policies, allowing administrators to review allowed and denied traffic based on these policies.
3. Security Profiles:
a. SSL Inspection:
- Inspects SSL/TLS traffic to decrypt and analyze encrypted traffic, ensuring no threats are hidden within HTTPS connections.
b. Web Filtering:
- Applies category-based filtering to block or allow access to specific websites (e.g., social media, file sharing), either by URL or category, like FortiGuard filtering.
c. Antivirus Protection:
- Scans network traffic for viruses, malware, spyware, and other malicious software, using AI and signature-based detection methods.
d. Application Control:
- Monitors and controls the usage of specific applications (e.g., blocking video streaming or P2P file sharing) to reduce risks and manage bandwidth.
4. Intrusion Prevention System (IPS):
a. IPS Sensors:
- Detects and prevents attacks by analyzing traffic patterns and behaviors using protocol decoders.
b. Protocol Decoders:
- Inspects and interprets protocol-level data to identify malformed or malicious packets.
c. Database of Signatures:
- Relies on a regularly updated database of known attack signatures to detect specific types of threats.
d. Application Control:
- Monitors, blocks, or allows application traffic based on policies, such as blocking video streaming to conserve bandwidth or increase security.
5. Application Control:
a. Monitoring Applications:
- Tracks the usage of applications on the network to identify which ones are being used and how much bandwidth they consume.
b. Blocking or Allowing Applications:
- Enables the ability to block specific applications (e.g., video streaming services or P2P file sharing) based on security policies or organizational requirements.
c. Traffic Shaping:
- Manages bandwidth usage by prioritizing certain applications or limiting the bandwidth available to non-essential applications.
d. Custom Application Signatures:
- Allows administrators to define custom application signatures to detect and control less common or proprietary applications within the network.
6. IPsec VPN:
a. Data Confidentiality and Integrity:
- Ensures that data sent through the VPN is encrypted and protected from unauthorized access while maintaining its integrity during transmission.
b. Remote Access VPN:
- Allows individual users to connect securely to the corporate network from remote locations using IPsec protocols and authentication.
c. Site-to-Site VPN:
- Connects two or more sites (e.g., branch offices) securely over the internet, using IPsec to ensure encrypted communication between them.
7. SSL VPN:
a. Web Mode:
- Provides remote access through a web browser without requiring additional software, allowing users to access internal network resources via HTTPS.
b. Tunnel Mode:
- Requires a VPN client and provides full network access, allowing the user to route all traffic through the VPN connection securely.
c. User Authentication:
- Supports multiple authentication methods, such as username/password, multi-factor authentication (MFA), or certificates to verify users before allowing VPN access.
d. SSL Encryption:
- Encrypts the VPN traffic using SSL/TLS, ensuring that the communication between the client and the server is secure from eavesdropping or tampering.
8. Security Fabric:
a. Centralized Management:
- Provides a unified platform for managing and monitoring all Fortinet security devices and solutions across the network, simplifying administration.
b. Automated Threat Response:
- Enables real-time automated responses to detected threats, reducing the time between threat detection and mitigation.
c. Integration with FortiAnalyzer and FortiManager:
- FortiGate integrates with FortiAnalyzer for detailed logging and FortiManager for centralized management of devices, providing comprehensive visibility and control.
d. End-to-End Security:
- Extends security across the entire network, including endpoints, applications, and cloud services, to create a fully integrated security solution.
Q1. What is Security fabric?
Security Fabric uses FortiTelemetry to connect different security sensors and tools together to collect, coordinate, and respond to malicious behavior anywhere it occurs on the network in real-time. The core of a security fabric is an upstream FortiGate located at the edge of the network, with several FortiGates functioning as Internet Segmentation Firewalls (ISFWs).
A security fabric is used to coordinate with the behavior of other Fortinet products in the network, including FortiAnalyzer, FortiManager, FortiClient, FortiClient EMS, FortiWeb, FortiSwitch, and FortiAP.
- Author:wenyang
- URL:https://www.wenyang.xyz/article/fortigate
- Copyright:All articles in this blog, except for special statements, adopt BY-NC-SA agreement. Please indicate the source!
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